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High-Efficiency e-Powertrain Topology by Integrating Open-End Winding and Winding Changeover for Improving Fuel Economy of Electric Vehicles

Author

Listed:
  • Kyoung-Soo Cha

    (Advanced Mobility System Group, Korea Institute of Industrial Technology, Daegu 42994, Republic of Korea
    These authors contributed equally to this work.)

  • Jae-Hyun Kim

    (School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
    These authors contributed equally to this work.)

  • Sung-Woo Hwang

    (Department of Automotive Engineering, Hanyang University, Seoul 04763, Republic of Korea)

  • Myung-Seop Lim

    (Department of Automotive Engineering, Hanyang University, Seoul 04763, Republic of Korea)

  • Soo-Hwan Park

    (Department of Mechanical, Robotics, and Energy Engineering, Dongguk University, Seoul 04620, Republic of Korea)

Abstract

The fuel economy of electric vehicles (EVs) is an important factor in determining the competitiveness of EVs. Since the fuel economy is affected by the efficiency of an e-powertrain composed of a motor and inverter, it is necessary to select a high-efficiency topology for the e-powertrain. In this paper, a novel topology of e-powertrains to improve the fuel economy of EVs is proposed. The proposed topology aims to improve the system efficiency by integrating open-end winding (OEW) and winding changeover (WC). The proposed OEW-PMSM with WC enables to drive a permanent magnet synchronous motor (PMSM) in four different modes. Each mode can increase inverter efficiency and motor efficiency by changing motor parameters and maximum modulation index. In this paper, the system efficiency of the proposed topology was evaluated using electromagnetic finite element analysis and a loss model of power semiconductors. In addition, the vehicle simulations were performed to evaluate the fuel economy of the proposed topology, thereby proving the superiority of the proposed topology compared with the conventional PMSM.

Suggested Citation

  • Kyoung-Soo Cha & Jae-Hyun Kim & Sung-Woo Hwang & Myung-Seop Lim & Soo-Hwan Park, 2024. "High-Efficiency e-Powertrain Topology by Integrating Open-End Winding and Winding Changeover for Improving Fuel Economy of Electric Vehicles," Mathematics, MDPI, vol. 12(21), pages 1-19, October.
    • Handle: RePEc:gam:jmathe:v:12:y:2024:i:21:p:3415-:d:1511446
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    References listed on IDEAS

    as
    1. Farshid Mahmouditabar & Nick J. Baker, 2023. "Design Optimization of Induction Motors with Different Stator Slot Rotor Bar Combinations Considering Drive Cycle," Energies, MDPI, vol. 17(1), pages 1-26, December.
    2. Cha, Kyoung-Soo & Kim, Dong-Min & Jung, Young-Hoon & Lim, Myung-Seop, 2020. "Wound field synchronous motor with hybrid circuit for neighborhood electric vehicle traction improving fuel economy," Applied Energy, Elsevier, vol. 263(C).
    3. Ahmed Selema & Mohamed N. Ibrahim & Peter Sergeant, 2022. "Metal Additive Manufacturing for Electrical Machines: Technology Review and Latest Advancements," Energies, MDPI, vol. 15(3), pages 1-18, January.
    Full references (including those not matched with items on IDEAS)

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